Eaton Posi limited-slip | GM 8.875″ 12-Bolt Rear Chevy Car 1964-1972 | 30 Spline Axles | 3.08-3.90 Gear Ratio

The Eaton Posi limited-slip differential is the perfect way to control traction in street rods, light duty pickups and all types of tarmac running race cars.

Specs

Part Number: 19554-010

Traction Type: Eaton Posi limited-slip

Carrier Break: 3.08-3.90 Gear Ratio

Differential: GM 8.875 Inch 12-Bolt Car

Vehicle Fitment

• 1964 – 1972        Chevrolet             Impala
• 1966 – 1970        Chevrolet             Caprice
• 1965 – 1972        Chevrolet             El Camino
• 1964 – 1967        Chevrolet             Malibu
• 1964 – 1972        Chevrolet             Chevelle
• 1967 – 1972        Chevrolet             Camaro
• 1969 – 1972        Chevrolet             Nova
• 1970 – 1972        Chevrolet             Monte Carlo
• 1970 – 1972        Pontiac GTO
• 1969 – 1972        Pontiac Firebird

Download EATON Application Guide PDF

Operation

The Posi prevents wheel slip before it can get started. Racebred carbon disc clutch packs, preloaded by a central spring assembly, are located behind each differential side gear. When torque input changes (one wheel slips), the clamping load on the clutch packs increases, causing them to smoothly transfer power to the other wheel as needed.

Performance

The Eaton Posi is smooth and automatic, requiring no driver input. Featuring pyrolytic carbon clutches and a rebuildable design, the Posi can be custom tuned for your desired performance.

Lubrication

A quality, petroleum-mineral based, GL5 rated 80w-90 gear oil should be used. It is necessary to add a four-ounce bottle of friction modifier for optimum performance (if friction modifier has not already been added to the petroleum-mineral based gear oil).

Features

• Superior rebuildable design
• Race-bred carbon friction discs
• Limited-slip operation
• Smooth and automatic engagement – no driver action needed
• Tunable via various spring packs (a.k.a. pre-loads)